Spool Stage 2 IFX350X Direct-Injection Injectors +60% – BMW B58 Gen 2
Spool Stage 2 IFX350X Direct-Injection Injectors +60% – BMW B58 Gen 2
Spool Stage 2 IFX350X Direct-Injection Injectors +60% – BMW B58 Gen 2 is a Spool Performance upgraded direct-injection injector set for high-output BMW applications while retaining factory-style direct-injection control.
- 60% more flow than stock injectors
- Operating capability: up to 390 bar
- Tuning/calibration changes are required
- Designed to retain controlled idle and low-load behaviour appropriate to the application
Fitment: BMW B58 Gen 2 applications; Spool specifically tags M340i and M440i for this injector set.
Important: fuel-system capacity and calibration must be matched to the complete engine combination. Built by Boost & Tune can assist with BMW-specific installation and calibration planning.
Dispatch: Special order — allow 2–3 weeks.
Supplier
Spool Performance
Product System
- Fuel System
Vehicle Fitment
- BMW 2 Series M240I G42 B58
- BMW 340I M340I G20 G21 B58
- BMW 4 Series G22 B58
- BMW 4 Series G23 B58
- BMW 4 Series Gran Coupe G26 B58
Confirm chassis, engine, drivetrain and production-year compatibility before ordering.
Supplier Part Number
SP-INJ-B58Gen2X
Built by Boost & Tune Support
BBT can assist with fitment review, installation, supporting modifications, configuration and calibration requirements where applicable.